From: Alexandre Pereira Nunes <alex@PolesApart.dhs.org>
To: linux-kernel@vger.kernel.org
Cc: kraxel@bytesex.org
Subject: promiscuous bttv parameter checking (2.4.21-pre3)
Date: Wed, 05 Feb 2003 18:29:36 -0200 [thread overview]
Message-ID: <3E417430.9000101@PolesApart.dhs.org> (raw)
Hi,
As of linux 2.4.21-pre3, bttv driver fails to check the "channel"
attribute correctly. This is caused because there is no check for
negative values on the channel parameter (at least ) in ioctls
VIDIOCGCHAN (bttv-driver.c:1510) and VIDIOCSCHAN (same file, at line
1537). Negative parameters, though invalid, are passed along.
While in the first case (VIDIOCGCHAN) I see no dark effects other than
the wacky channel name in the name member of the returned structure, it
is possible that passing the negative value in VIDIOCSCHAN spots
side-effects, specially in the function bt848_muxsel.
(A cc: went to the maintainer. Any questions please cc: me since I'm not
subscribed to the kernel mailing list).
Best regards,
Alexandre
reply other threads:[~2003-02-05 20:20 UTC|newest]
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